docs: clarify JSX runtime type in ESLint React configuration

Author: Rel1cx

apps/website/content/docs/configuration/configure-language-config.mdx

@@ -14,7 +14,7 @@ ESLint React references your language config to determine how to perform static
 
 ## JSX Runtime
 
-ESLint React reads your `tsconfig.json` or `jsconfig.json` configuration files to determines how to perform the JSX analysis internally.
+ESLint React reads your `tsconfig.json` or `jsconfig.json` configuration file to determine the JSX runtime type. If nothing is specified, it defaults to [`automatic`](https://legacy.reactjs.org/blog/2020/09/22/introducing-the-new-jsx-transform.html).
 
 The following [compiler options](https://www.typescriptlang.org/tsconfig/#compilerOptions) are respected: